linux-kernel - Re: [lkp] [locking/percpu] 1916a96ef1: INFO: task systemd:1 blocked for more than 300 seconds.

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Date:	Tue, 19 Jul 2016 15:31:47 +0200
From:	Oleg Nesterov <oleg@...hat.com>
To:	kernel test robot <xiaolong.ye@...el.com>
Cc:	Peter Zijlstra <peterz@...radead.org>,
	0day robot <fengguang.wu@...el.com>, Tejun Heo <tj@...nel.org>,
	Paul McKenney <paulmck@...ux.vnet.ibm.com>,
	John Stultz <john.stultz@...aro.org>,
	Dmitry Shmidt <dimitrysh@...gle.com>,
	LKML <linux-kernel@...r.kernel.org>, lkp@...org
Subject: Re: [lkp] [locking/percpu]  1916a96ef1: INFO: task systemd:1
	blocked for more than 300 seconds.

On 07/19, kernel test robot wrote:
>
> https://github.com/0day-ci/linux Peter-Zijlstra/locking-percpu-rwsem-Optimize-readers-and-reduce-global-impact/20160715-142422
> commit 1916a96ef19d77b4ff2f83711bb4233dc4d81dbf ("locking/percpu-rwsem: Introduce bias knob")

Yes, gp_state == !GP_IDLE in sabotage was not right, this will be fixed.

Oleg.